Directions:
Spray a 9 x 13-inch baking pan generously with nonstick cooking spray. In a large pan on the stovetop, melt the butter over medium-low heat. Add the marshmallows and stir until the mixture is melted and smooth. Add the chocolate chips and stir until smooth. Add the rice krispy cereal. Stir until thoroughly combined. Press the mixture to the prepared pan with buttered fingers or a spatula. Drizzle ice cream topping all over the mixture (you may need to warm it a little first in the microwave). Sprinkle pecan pieces and Heath toffee bits on top. Press lightly to make sure they stick onto the bars.